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Catalyst

Sure, here’s the definition of catalyst:

Catalyst:

In chemistry and biochemistry, a catalyst is a substance that increases the rate of a chemical reaction without being consumed in the reaction. Catalysts are typically molecules that lower the activation energy required for a reaction to occur.

Mechanism:

  • Catalysts bind to reactant molecules, forming an intermediate complex.
  • The intermediate complex has a lower activation energy than the reactant molecules.
  • The intermediate complex breaks down into products, releasing the catalyst.

Examples:

  • Enzymes are catalysts in living organisms.
  • Acids are catalysts in many industrial processes.
  • Precious metals, such as gold and platinum, are catalysts in fuel cells.

Benefits:

  • Catalysts increase the rate of reactions, making them occur faster.
  • Catalysts reduce the activation energy required for a reaction to occur.
  • Catalysts can be used to control the rate and direction of reactions.

Applications:

  • Catalysts are used in a wide variety of industrial processes, including chemical synthesis, drug production, and pollution control.
  • Catalysts are also used in a variety of biological processes, including metabolism and digestion.

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